Watch Info & Tips

A.Lange & Söhne to launch new Lange 1 Moon Phase watch at SIHH 2017

Ready for launch at SIHH 2017, this new Lange 1 Moon Phase from A.Lange & Söhne boasts a movement that takes a new and realistic approach to the complication by combining the moon-phase display with a day/night indicator.

The result is a moon for both days and nights, with the sky changing from a night view with stars surrounding the moon, to a day view with the sky a clear blue.

This is achieved via a separate solid-gold moon orbiting in the foreground while behind it a disc showing the different times of day in varying blue hues revolves once every 24 hours. Thus, the moon always orbits against a realistic background, one that doubles as a day/night indicator when setting the watch.

Lange
Lange 1 Moon Phase with silver dial.

The 70-part, fully integrated moon mechanism (there are 438 parts in all) tracks the lunar cycle – with an average duration of 29 days, 12 hours, 44 minutes and 3 seconds – so accurately that it takes 122.6 years for the display to deviate from the true synodic period by just one day.

Lange
Lange 1 Moon Phase with black dial.

Power comes from a twin mainspring barrel with a maximum reserve of 72 hours – it also drives a precisely jumping outsize date display. For the technically-minded, the Lange 1 Moon Phase features an escapement with a cam-poised balance and a free-sprung Lange hairspring. Suspended beneath the hand-engraved balance cock, it beats with a frequency of 21,600 semi-oscillations per hour.

Lange
Sky disc.

The watch spans 38.5mm and will come cased in white gold with a black dial, pink gold with silver dial and platinum with a rhodium dial, priced from around $325,000.

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